Composite cement-based cover plate

Abstract

The utility model belongs to the field of cover plates, and discloses a composite cement-based cover plate which comprises cover plate bodies, clamping structures which are centrosymmetric are arranged at the two ends of the cover plate bodies, so that the two end-to-end adjacent cover plate bodies are detachably connected; the clamping structure comprises a first clamping block and a second clamping block which are fixedly connected with each other, a first groove is formed in the first clamping block, a two-way lead screw is arranged in the first groove, the two ends of the two-way lead screw are rotationally connected with the first clamping block, and moving strips sliding in the first groove are in threaded connection with threads in different rotating directions of the two-way lead screw; the outer side end of the moving strip is fixedly connected with an inserting strip, a second groove is formed in the second clamping block, and inserting grooves communicating with the second groove are formed in the two ends of the second groove. The upper surfaces of the two adjacent cover plate bodies are located in the same plane, the height difference between the two adjacent cover plate bodies is avoided, and then the probability that pedestrians are stumbled is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of cover plates, specifically relating to a composite cement-based cover plate. Background Technology

[0002] With the rapid development of the national economy, traffic congestion in major and medium-sized cities has become increasingly severe. Subways, with their advantages of speed and comfort, have gradually become an effective way to solve these urban traffic problems. Almost all subway stations and trains in almost every city are extremely crowded. In the event of a power system malfunction or fire on a subway train, the key is to ensure the safe and orderly evacuation of passengers from the tunnel sections as quickly as possible, eliminating or reducing casualties caused by obstructed evacuation routes. Currently, to facilitate rapid passenger evacuation, evacuation platforms have been constructed in subway tunnels. Traditional evacuation platforms are constructed by arranging and building platform covers.

[0003] For example, CN112648004A discloses a composite cement-based iron evacuation platform cover plate, including a fixing plate fixed to the tunnel wall. A platform plate and an installation block are provided on one side of the fixing plate. A rectangular connecting block embedded in the fixing plate is fixed on the side of the platform plate and the installation block near the fixing plate. The fixing plate and the rectangular connecting block are fixedly connected by fixing screws. A first installation cavity, a second installation cavity and a third installation cavity are provided on the platform plate. A fixing pipe is fixed at the bottom of the platform plate. A support rod is rotatably connected between the fixing pipe and the installation block. A foot pedal mechanism and a warning mechanism are provided on the platform plate. The foot pedal mechanism and the warning mechanism are linked. The foot pedal mechanism includes a lifting plate that slides in the first installation cavity. A first insert rod and a second insert rod that penetrate the bottom wall of the first installation cavity are fixed at the bottom of the lifting plate. A first spring located in the first installation cavity is fitted on the first insert rod and the second insert rod. A foot pedal plate is detachably fixed to the top of the lifting plate by screws.

[0004] The above solution still has the following problems in actual use: Since the platform is constructed by arranging several cover plates, when a pedestrian steps on the footboard, the footboard and the lifting plate will move down, creating a height difference between adjacent footboards, which can easily cause pedestrians to trip. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a composite cement-based cover plate, which solves the problem that the height difference between adjacent footboards in the existing technology makes it easy for pedestrians to trip.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A composite cement-based cover plate, comprising:

[0008] The cover plate body has a centrally symmetrical snap-fit ​​structure at both ends, which allows two adjacent cover plate bodies to be detachably connected.

[0009] The snap-fit ​​structure includes a first snap-fit ​​block and a second snap-fit ​​block that are fixedly connected to each other. The first snap-fit ​​block has a first groove, and a bidirectional lead screw is provided in the first groove. The two ends of the bidirectional lead screw are rotatably connected to the first snap-fit ​​block. Moving strips that slide in the first groove are threaded onto the threads of the bidirectional lead screw in different directions. Insert strips are fixedly connected to the outer ends of the moving strips. The second snap-fit ​​block has a second groove, and slots communicating with the second groove are provided at both ends of the second groove.

[0010] The principles and technical effects of the above technical solution are as follows:

[0011] The snap-fit ​​structure between two adjacent cover plates is connected. Specifically, the snap-fit ​​structure engages with the two cover plates, and a bidirectional screw is rotated to drive two moving strips in the first groove to move in opposite directions. This causes the two strips to move away from each other and insert into their corresponding slots, thus fixing the two adjacent cover plates together. This ensures that the upper surfaces of the two adjacent cover plates are on the same plane, preventing a height difference between them and reducing the chance of pedestrians tripping.

[0012] In a preferred embodiment, the present invention can be further configured such that the thickness of the first snap-fit ​​block is greater than the thickness of the second snap-fit ​​block, and the sum of the thicknesses of the first snap-fit ​​block and the second snap-fit ​​block is equal to the thickness of the cover plate body.

[0013] In a preferred embodiment, the present invention can be further configured such that the width of the first snap-fit ​​block is equal to the width of the second snap-fit ​​block.

[0014] In a preferred embodiment, the present invention can be further configured such that: both ends of the bidirectional lead screw are rotatably connected to sleeves, and the sleeves are fixedly connected inside the first snap-fit ​​block.

[0015] In a preferred embodiment, the present invention can be further configured such that the end faces of both ends of the bidirectional lead screw are provided with concave internal hexagonal blind holes.

[0016] In a preferred embodiment, this utility model can be further configured such that: wire grooves are formed on both sides of the cover plate body, and several light grooves are formed on both sides of the upper end surface of the cover plate body, the light grooves communicating with the wire grooves. Ground indicator lights are fixedly installed in the light grooves.

[0017] In a preferred embodiment, the present invention can be further configured such that the distance between the grooves on both sides of the cover plate body and the upper and lower surfaces of the cover plate body is equal, and the shortest distance between the grooves on both sides of the cover plate body and the side edge of the cover plate body is equal.

[0018] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0019] A fixed connection refers to a connection in which parts or components are fixed in place, with no relative movement between them. These connections are divided into two types: detachable and non-detachable.

[0020] (1) Detachable connections use screws, splines, wedges, etc. to fix parts together. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of bolts, keys, wedges) and properly tightened.

[0021] (2) Non-removable connections mainly refer to welding, riveting, and tenon joints. Since disassembly is required by forging, sawing, or oxy-acetylene cutting during repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to the process quality, technical inspection, and remedial measures (such as correction, polishing, etc.) when making connections.

[0022] A threaded connection is a detachable connection in which threaded parts (or the threaded portion of the connected parts) are joined together to form a single unit.

[0023] A sliding connection refers to two objects that are in contact but not fixed, and can slide relative to each other.

[0024] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0025] The beneficial effects of this utility model are:

[0026] This application connects two adjacent cover plate bodies through a snap-fit ​​structure. Specifically, the snap-fit ​​structure between the two cover plate bodies is engaged, and the bidirectional screw is rotated to drive the two moving strips in the first groove to move in opposite directions, so that the two inserts are inserted into the corresponding slots away from each other. This connects and fixes the two adjacent cover plate bodies, so that the upper surfaces of the two adjacent cover plate bodies are in the same plane, avoiding the formation of a height difference between the two adjacent cover plate bodies, thereby reducing the probability of pedestrians tripping. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0029] Figure 2This is a schematic diagram of the snap-fit ​​structure according to an embodiment of the present utility model;

[0030] Figure 3 This is a schematic diagram of the first snap-fit ​​block structure according to an embodiment of the present utility model;

[0031] Figure 4 This is a schematic diagram of the second snap-fit ​​block structure according to an embodiment of the present invention. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Based on the concept of this application, combined with Figures 1 to 4 This describes an embodiment of a composite cement-based cover plate. Specifically, the composite cement-based cover plate is constructed as a split structure, comprising a cover plate body 1, a snap-fit ​​structure 10, and other structures that cooperate with each other. The snap-fit ​​structure 10 between two adjacent cover plate bodies 1 is connected to each other. The specific connection method is as follows: the snap-fit ​​structure 10 between the two cover plate bodies 1 is engaged, and the bidirectional screw 13 is rotated to drive the two moving strips 14 in the first groove 111 to move in opposite directions, so that the two insert strips 15 are inserted into the corresponding slots 122 away from each other, thereby connecting and fixing the two adjacent cover plate bodies 1. This ensures that the upper surfaces of the two adjacent cover plate bodies 1 are in the same plane, avoiding the formation of a height difference between the two adjacent cover plate bodies 1, and thus reducing the probability of pedestrians tripping.

[0035] like Figures 1 to 4 As shown, a composite cement-based cover plate includes:

[0036] The cover plate body 1 has a centrally symmetrical snap-fit ​​structure 10 at both ends, which allows two adjacent cover plate bodies 1 to be detachably connected.

[0037] The snap-fit ​​structure 10 includes a first snap-fit ​​block 11 and a second snap-fit ​​block 12 that are fixedly connected to each other. The first snap-fit ​​block 11 has a first groove 111. A bidirectional lead screw 13 is provided in the first groove 111. The two ends of the bidirectional lead screw 13 are rotatably connected to the first snap-fit ​​block 11. A sliding strip 14 that slides in the first groove 111 is threaded onto the threads of the bidirectional lead screw 13 with different directions of rotation. An insert 15 is fixedly connected to the outer end of the sliding strip 14. The second snap-fit ​​block 12 has a second groove 121. The two ends of the second groove 121 have slots 122 that communicate with the second groove 121.

[0038] In use, the snap-fit ​​structure 10 between two adjacent cover plate bodies 1 is connected to each other. Specifically, the snap-fit ​​structure 10 between the two cover plate bodies 1 is engaged, and the bidirectional lead screw 13 is rotated to drive the two moving strips 14 in the first groove 111 to move in opposite directions, causing the two insert strips 15 to move away from each other and insert into their corresponding slots 122, thereby connecting and fixing the two adjacent cover plate bodies 1. This ensures that the upper surfaces of the two adjacent cover plate bodies 1 are on the same plane, avoiding a height difference between them and reducing the chance of pedestrians tripping.

[0039] In one embodiment of this utility model, the sum of the thickness of the first latching block 11 and the thickness of the second latching block 12 is equal to the thickness of the cover plate body 1. When the latching structures 10 between two adjacent cover plate bodies 1 are connected to each other, the first latching block 11 and the second latching block 12 on the two latching structures 10 overlap together, and the entire thickness is the same as the thickness of the cover plate body 1. This makes the upper surfaces of the two cover plate bodies 1 lie on the same plane, avoiding the formation of a height difference between the two adjacent cover plate bodies 1, thereby reducing the probability of pedestrians tripping.

[0040] In one embodiment of this utility model, the thickness of the first snap-fit ​​block 11 is greater than the thickness of the second snap-fit ​​block 12, and the width of the first snap-fit ​​block 11 is equal to the width of the second snap-fit ​​block 12. The purpose of this design is to create an interlock between the first snap-fit ​​blocks 11 on the two snap-fit ​​structures 10, preventing them from being pulled apart longitudinally, thereby facilitating the installation between the two cover plate bodies 1.

[0041] In one embodiment of this utility model, in order to ensure the rotation effect of the bidirectional lead screw 13, sleeves 16 are rotatably connected to both ends of the bidirectional lead screw 13, and the sleeves 16 are fixedly connected inside the first locking block 11. At this time, the design of fixing the sleeves 16 inside the first locking block 11 ensures that the bidirectional lead screw 13 will not cause wear to the cover plate made of composite cement when it rotates.

[0042] In one embodiment of this utility model, in order to facilitate the worker to rotate the bidirectional lead screw 13, concave internal hexagon blind holes 131 are provided on the end faces of both ends of the bidirectional lead screw 13. The worker can use an internal hexagon tool to rotate the bidirectional lead screw 13 to drive the two moving strips 14 in the first groove 111 to move in opposite directions, so that the two insert strips 15 are inserted into the corresponding slots 122 away from each other, thereby connecting and fixing the two adjacent cover plate bodies 1.

[0043] In one embodiment of this utility model, wire grooves 17 are provided on both sides of the cover plate body 1, and several light grooves 18 are provided on both sides of the upper end surface of the cover plate body 1. The light grooves 18 are connected to the wire grooves 17. The design of the wire grooves 17 facilitates the passage of wires, and the design of the light grooves 18 facilitates the fixed installation of ground indicator lights. After the wires in the wire grooves 17 are electrically connected to the ground indicator lights in the light grooves 18, the power is turned on, so that the ground indicator lights on both sides of the cover plate body 1 light up to guide pedestrians to evacuate.

[0044] In one embodiment of this utility model, after the two cover plate bodies 1 are installed adjacent to each other, in order to make the wire grooves 17 between the two cover plate bodies 1 interconnected, the distances between the wire grooves 17 on both sides of the cover plate body 1 and the upper and lower surfaces of the cover plate body 1 must be equal, and the shortest distances between the wire grooves 17 on both sides of the cover plate body 1 and the sides of the cover plate body 1 must be equal. The purpose of this design is to ensure that as long as the two cover plate bodies 1 are installed adjacent to each other, the wire grooves 17 between the two cover plate bodies 1 can be aligned, which facilitates the subsequent wiring to power the ground indicator light.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims of this utility model.

Claims

1. A composite cement-based cover plate, characterized in that, include: The cover plate body (1) has a centrally symmetrical snap-fit ​​structure (10) at both ends, so that two adjacent cover plate bodies (1) can be detachably connected. The snap-fit ​​structure (10) includes a first snap-fit ​​block (11) and a second snap-fit ​​block (12) that are fixedly connected to each other. The first snap-fit ​​block (11) has a first groove (111) and a bidirectional lead screw (13) is provided in the first groove (111). The two ends of the bidirectional lead screw (13) are rotatably connected to the first snap-fit ​​block (11). The threads of the bidirectional lead screw (13) with different directions of rotation are threadedly connected to a sliding strip (14) that slides in the first groove (111). The outer end of the sliding strip (14) is fixedly connected to an insert (15). The second snap-fit ​​block (12) has a second groove (121) and the two ends of the second groove (121) have slots (122) that communicate with the second groove (121).

2. The composite cement-based cover plate according to claim 1, characterized in that, The thickness of the first snap-fit ​​block (11) is greater than the thickness of the second snap-fit ​​block (12), and the sum of the thicknesses of the first snap-fit ​​block (11) and the second snap-fit ​​block (12) is equal to the thickness of the cover plate body (1).

3. A composite cement-based cover plate according to claim 2, characterized in that, The width of the first snap-fit ​​block (11) is equal to the width of the second snap-fit ​​block (12).

4. A composite cement-based cover plate according to claim 1, characterized in that, The two ends of the bidirectional lead screw (13) are rotatably connected to sleeves (16), and the sleeves (16) are fixedly connected inside the first snap-fit ​​block (11).

5. A composite cement-based cover plate according to claim 4, characterized in that, The two ends of the bidirectional lead screw (13) are provided with concave internal hexagonal blind holes (131).

6. A composite cement-based cover plate according to claim 1, characterized in that, The cover plate body (1) has wire grooves (17) on both sides, and several light grooves (18) are opened on both sides of the upper end surface of the cover plate body (1). The light grooves (18) are connected to the wire grooves (17), and ground indicator lights are fixedly installed in the light grooves (18).

7. A composite cement-based cover plate according to claim 6, characterized in that, The distance between the grooves (17) on both sides of the cover plate body (1) and the upper and lower surfaces of the cover plate body (1) is equal, and the shortest distance between the grooves (17) on both sides of the cover plate body (1) and the side of the cover plate body (1) is equal.

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